/**
 * 单利模式的demo.<br/>
 *
 * <ul>
 * <li>懒汉</li>
 * <li>饿汉</li>
 * <li>双重校验锁DCL</li>
 * <li>静态内部类</li>
 * <li>枚举</li>
 * </ul>
 * 
 * Created by zxybird on 2018/2/5.
 */
package com.zxy.designpattern.singletonpattern;